| D49 | Neoplasms of unspecified behavior |
| D49.0 | Neoplasm of unspecified behavior of digestive system |
| D49.1 | Neoplasm of unspecified behavior of respiratory system |
| D49.2 | Neoplasm of unspecified behavior of bone, soft tissue, and skin |
| D49.3 | Neoplasm of unspecified behavior of breast |
| D49.4 | Neoplasm of unspecified behavior of bladder |
| D49.5 | Neoplasm of unspecified behavior of other genitourinary organs |
| D49.6 | Neoplasm of unspecified behavior of brain |
| D49.7 | Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system |
| D49.8 | Neoplasm of unspecified behavior of other specified sites |
| D49.81 | Neoplasm of unspecified behavior of retina and choroid |
| D49.89 | Neoplasm of unspecified behavior of other specified sites |
| D49.9 | Neoplasm of unspecified behavior of unspecified site |